java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label10.c


--------------------------------------------------------------------------------


This is Ultimate 0.1.24-13a467a-m
[2019-10-14 21:55:04,645 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-14 21:55:04,647 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-14 21:55:04,659 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-14 21:55:04,660 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
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[2019-10-14 21:55:04,662 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2019-10-14 21:55:04,674 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-14 21:55:04,679 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-14 21:55:04,681 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-14 21:55:04,685 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
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[2019-10-14 21:55:04,697 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-10-14 21:55:04,698 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-14 21:55:04,704 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2019-10-14 21:55:04,718 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2019-10-14 21:55:04,722 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-10-14 21:55:04,723 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2019-10-14 21:55:04,738 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-14 21:55:04,738 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-14 21:55:04,739 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-14 21:55:04,739 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-14 21:55:04,740 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-14 21:55:04,740 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-14 21:55:04,740 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-14 21:55:04,740 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-14 21:55:04,741 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-14 21:55:04,741 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-14 21:55:04,741 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-14 21:55:04,741 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-14 21:55:04,741 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-14 21:55:04,741 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-14 21:55:04,742 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-14 21:55:04,742 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-14 21:55:04,742 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-14 21:55:04,742 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-14 21:55:04,743 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-14 21:55:04,743 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-14 21:55:04,743 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-14 21:55:04,743 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-14 21:55:04,743 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-14 21:55:04,744 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-14 21:55:04,744 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-14 21:55:04,744 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-14 21:55:04,744 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-14 21:55:04,744 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-14 21:55:04,745 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-14 21:55:05,064 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-14 21:55:05,085 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-14 21:55:05,088 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-14 21:55:05,090 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-14 21:55:05,090 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-14 21:55:05,091 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label10.c
[2019-10-14 21:55:05,157 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb43eebad/46eeac0285c24ad5bb40a7ad6f1c0ef9/FLAG9eac82df8
[2019-10-14 21:55:05,942 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-14 21:55:05,942 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label10.c
[2019-10-14 21:55:05,980 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb43eebad/46eeac0285c24ad5bb40a7ad6f1c0ef9/FLAG9eac82df8
[2019-10-14 21:55:06,448 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb43eebad/46eeac0285c24ad5bb40a7ad6f1c0ef9
[2019-10-14 21:55:06,457 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-14 21:55:06,459 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-14 21:55:06,460 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-14 21:55:06,460 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-14 21:55:06,464 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-14 21:55:06,465 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:55:06" (1/1) ...
[2019-10-14 21:55:06,468 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d0e25df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:06, skipping insertion in model container
[2019-10-14 21:55:06,469 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:55:06" (1/1) ...
[2019-10-14 21:55:06,477 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-14 21:55:06,639 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-14 21:55:08,144 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 21:55:08,159 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-14 21:55:09,026 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 21:55:09,063 INFO  L192         MainTranslator]: Completed translation
[2019-10-14 21:55:09,063 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:09 WrapperNode
[2019-10-14 21:55:09,063 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-14 21:55:09,064 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-14 21:55:09,064 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-14 21:55:09,065 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-14 21:55:09,079 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:09" (1/1) ...
[2019-10-14 21:55:09,080 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:09" (1/1) ...
[2019-10-14 21:55:09,138 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:09" (1/1) ...
[2019-10-14 21:55:09,140 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:09" (1/1) ...
[2019-10-14 21:55:09,247 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:09" (1/1) ...
[2019-10-14 21:55:09,290 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:09" (1/1) ...
[2019-10-14 21:55:09,333 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:09" (1/1) ...
[2019-10-14 21:55:09,379 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-14 21:55:09,380 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-14 21:55:09,380 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-14 21:55:09,380 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-14 21:55:09,382 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:09" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-14 21:55:09,455 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-14 21:55:09,455 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-14 21:55:09,455 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-14 21:55:09,455 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-10-14 21:55:09,456 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2019-10-14 21:55:09,456 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2019-10-14 21:55:09,456 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-14 21:55:09,456 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-14 21:55:09,456 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-10-14 21:55:09,456 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2019-10-14 21:55:09,457 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2019-10-14 21:55:09,457 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-14 21:55:09,458 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-14 21:55:09,459 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-14 21:55:09,460 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-14 21:55:09,460 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-14 21:55:09,462 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-14 21:55:14,232 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-14 21:55:14,232 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-14 21:55:14,235 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:55:14 BoogieIcfgContainer
[2019-10-14 21:55:14,236 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-14 21:55:14,237 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-14 21:55:14,238 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-14 21:55:14,241 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-14 21:55:14,241 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:55:06" (1/3) ...
[2019-10-14 21:55:14,242 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c02378b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:55:14, skipping insertion in model container
[2019-10-14 21:55:14,243 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:55:09" (2/3) ...
[2019-10-14 21:55:14,243 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c02378b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:55:14, skipping insertion in model container
[2019-10-14 21:55:14,244 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:55:14" (3/3) ...
[2019-10-14 21:55:14,253 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem04_label10.c
[2019-10-14 21:55:14,268 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-14 21:55:14,279 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-14 21:55:14,292 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-14 21:55:14,347 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-14 21:55:14,347 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-14 21:55:14,347 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-14 21:55:14,347 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-14 21:55:14,347 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-14 21:55:14,348 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-14 21:55:14,348 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-14 21:55:14,348 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-14 21:55:14,402 INFO  L276                IsEmpty]: Start isEmpty. Operand 906 states.
[2019-10-14 21:55:14,473 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 823
[2019-10-14 21:55:14,473 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:55:14,476 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 21:55:14,478 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:55:14,484 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:55:14,486 INFO  L82        PathProgramCache]: Analyzing trace with hash -1453677845, now seen corresponding path program 1 times
[2019-10-14 21:55:14,496 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:55:14,497 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691909433]
[2019-10-14 21:55:14,497 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:55:14,498 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:55:14,498 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:55:14,984 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:55:15,808 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:55:16,444 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 21:55:16,444 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691909433]
[2019-10-14 21:55:16,445 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 21:55:16,446 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-14 21:55:16,446 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961346707]
[2019-10-14 21:55:16,453 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 21:55:16,453 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:55:16,464 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 21:55:16,465 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-14 21:55:16,467 INFO  L87              Difference]: Start difference. First operand 906 states. Second operand 5 states.
[2019-10-14 21:55:25,451 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:55:25,452 INFO  L93              Difference]: Finished difference Result 2672 states and 5138 transitions.
[2019-10-14 21:55:25,452 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-14 21:55:25,454 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 822
[2019-10-14 21:55:25,466 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:55:25,520 INFO  L225             Difference]: With dead ends: 2672
[2019-10-14 21:55:25,520 INFO  L226             Difference]: Without dead ends: 1702
[2019-10-14 21:55:25,540 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2019-10-14 21:55:25,567 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1702 states.
[2019-10-14 21:55:25,746 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1687.
[2019-10-14 21:55:25,748 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1687 states.
[2019-10-14 21:55:25,758 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 3123 transitions.
[2019-10-14 21:55:25,760 INFO  L78                 Accepts]: Start accepts. Automaton has 1687 states and 3123 transitions. Word has length 822
[2019-10-14 21:55:25,763 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:55:25,764 INFO  L462      AbstractCegarLoop]: Abstraction has 1687 states and 3123 transitions.
[2019-10-14 21:55:25,764 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 21:55:25,764 INFO  L276                IsEmpty]: Start isEmpty. Operand 1687 states and 3123 transitions.
[2019-10-14 21:55:25,799 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 832
[2019-10-14 21:55:25,800 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:55:25,801 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 21:55:25,801 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:55:25,802 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:55:25,802 INFO  L82        PathProgramCache]: Analyzing trace with hash 2026831120, now seen corresponding path program 1 times
[2019-10-14 21:55:25,803 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:55:25,803 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313120766]
[2019-10-14 21:55:25,803 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:55:25,803 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:55:25,804 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:55:25,894 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:55:26,187 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:55:26,227 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:55:26,747 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 21:55:26,747 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313120766]
[2019-10-14 21:55:26,748 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 21:55:26,748 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-10-14 21:55:26,748 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192627668]
[2019-10-14 21:55:26,751 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-14 21:55:26,752 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:55:26,752 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-14 21:55:26,752 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-10-14 21:55:26,753 INFO  L87              Difference]: Start difference. First operand 1687 states and 3123 transitions. Second operand 9 states.
[2019-10-14 21:55:37,569 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 21:55:37,569 INFO  L93              Difference]: Finished difference Result 5149 states and 9583 transitions.
[2019-10-14 21:55:37,570 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2019-10-14 21:55:37,570 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 831
[2019-10-14 21:55:37,571 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 21:55:37,607 INFO  L225             Difference]: With dead ends: 5149
[2019-10-14 21:55:37,607 INFO  L226             Difference]: Without dead ends: 3468
[2019-10-14 21:55:37,613 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182
[2019-10-14 21:55:37,619 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3468 states.
[2019-10-14 21:55:37,780 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3468 to 3417.
[2019-10-14 21:55:37,780 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3417 states.
[2019-10-14 21:55:37,794 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3417 states to 3417 states and 5995 transitions.
[2019-10-14 21:55:37,795 INFO  L78                 Accepts]: Start accepts. Automaton has 3417 states and 5995 transitions. Word has length 831
[2019-10-14 21:55:37,796 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 21:55:37,796 INFO  L462      AbstractCegarLoop]: Abstraction has 3417 states and 5995 transitions.
[2019-10-14 21:55:37,796 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-10-14 21:55:37,797 INFO  L276                IsEmpty]: Start isEmpty. Operand 3417 states and 5995 transitions.
[2019-10-14 21:55:37,823 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 851
[2019-10-14 21:55:37,825 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 21:55:37,826 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 21:55:37,826 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 21:55:37,827 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 21:55:37,827 INFO  L82        PathProgramCache]: Analyzing trace with hash 1865909983, now seen corresponding path program 1 times
[2019-10-14 21:55:37,827 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 21:55:37,828 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135223001]
[2019-10-14 21:55:37,829 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:55:37,829 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 21:55:37,829 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 21:55:37,901 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:55:38,067 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:55:38,111 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:55:38,121 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:55:38,694 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2019-10-14 21:55:38,697 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135223001]
[2019-10-14 21:55:38,700 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592987029]
[2019-10-14 21:55:38,701 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-14 21:55:38,995 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 21:55:38,999 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1227 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-14 21:55:39,037 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 21:55:39,504 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 21:55:39,504 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-14 21:55:39,504 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 10
[2019-10-14 21:55:39,505 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825971826]
[2019-10-14 21:55:39,507 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 10 states
[2019-10-14 21:55:39,507 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 21:55:39,507 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2019-10-14 21:55:39,508 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90
[2019-10-14 21:55:39,508 INFO  L87              Difference]: Start difference. First operand 3417 states and 5995 transitions. Second operand 10 states.